Another mechanic unique to the Mystery Dungeon games are the IQ skills. These skills allow for the Pokémon to work on their own and attack intelligently. As each Pokémon has a certain IQ level, Group their skills increase as their IQ goes up in the same manner as happiness in the main games. When you get higher IQ, Group the Pokémon do more things on their own, Group all of which are customisable so you do not have to have any on that you do not wish. Each Pokémon Species is set to one specific group, Group from a selection of 8 which can have certain skills. The skills and the groups that they are a part of are as follows:

Name	IQ Level	Effect	Group
Course Checker	Base	Does not use attacks when a wall or ally is in the way.	All Groups
Escapist	Base	The Explorer Badge can be used to leave the dungeon.	All Groups
Item Catcher	Base	Can catch a thrown item to hold.	All Groups
Item Master	Base	Can use and throw held item.	All Groups
Exclusive Move-User	Base	Uses moves and not regular attack.	All Groups
Nontraitor		When confused or cowering, Pokemon will not attack friends.	All Groups
Status Checker		Does not use moves that inflict status that a foe may already have.	All Groups
Dedicated Traveler	Base	Moving is first priority over using attacks and items.	Group A Group B Group D
PP Saver		Sometimes gets to use a move without draining PP.	Group A Group D Group F Group G Group I
Cheerleader		Raises Attack and Special Attack of friends by 1.	Group B Group E
Efficiency Expert		Attacks Pokemon with the lowest HP first.	Group E Group H
Acute Sniffer		Refrains from moves that inflict a status change that the foe already has.	Group A Group G
Type-Advantage Master		Raises critical hit rate of type-effective moves.	Group A Group B Group C Group F
Brick Tough		Permanently adds 10 to max HP.	Group C Group E Group H
Self-Curer		Shortens required turns for Pokemon to heal from status.	Group D Group F Group G Group H Group I
Bodyguard		Takes damage in place of friends who are low on HP.	Group B Group E Group H
Power Pitcher		x damage inflicted with throwing items excluding Gravelrocks.	Group C Group E Group I
Survivalist		Restores more Belly stat with foods and may not be affected by Grimy Foods.	Group A Group C Group E Group I
Weak-Type Picker		Targets foes with good type compatibility.	Group F Group J
Wise Healer		Raises effectiveness of HP-recovery moves/items.	Group B Group E Group H
Coin Watcher		When Poke is picked up, 1.2x will be received instead.	Group A Group B Group H
Deep Breather		Recovers 1PP to a random move upon entering the next floor.	Group B Group E Group H Group I
Wary Fighter		Steps back one tile when it misses a move.	Group E Group F Group H
Practice Swinger		Raises attacks stats by 1 only for the turn after a move misses.	Group C Group D Group G Group I Group J
Hit-and-Runner		Sometimes cancels foe's counter-attacks.	Group F Group G Group J
Concentrator		Raises accuracy by 1 and reduces evasion by 1.	Group C Group D Group J
Exp. Go-Getter		Targets foes that give more experience.	Group C Group G Group I
Nonsleeper		Immune to all sleep-inducing/related moves.	Group A Group B Group C
Gap Prober		Ranged moves and throwing items can pass allies without causing damage.	Group B Group D Group F Group J
Energy Saver		Belly lowers slower.	Group E Group J
Defender		Raises Defense and Special Defense by 1 but lowers Attack and Special Attack by 1.	Group E Group J
Aggressor		Attack and Sp. Attack raises by 1 and Defense and Sp. Defense are lowered by 1.	Group C Group I
Trap Avoider		Avoids visible traps only.	Group D Group G
Sharp Shooter		Raises critical-hit ratio.	Group D Group F Group I
Lava Evader		Avoids walking on lava.	All Groups
Counter Basher		Lowers Defense by 1, but sometimes counters the damage received back to the adjacent opponent.	Group C
Quick Healer		Raises natural HP recovery.	Group E Group G Group H Group I
Counter Hitter		Sometimes counters 1/4 of the damage received back to the adjacent opponent.	Group D Group E
Multitalent		Adds 5 to Pokemon's max PP.	Group A Group F Group J
Exp. Elite		Earns more experience when defeating foes.	Group F Group G
Erratic Player		Increases multiplier effect of type-effective damage.	Group C Group G
Clutch Performer		Raises evasion by 2 when under 25% of max HP.	Group C Group D
All-Terrain Hiker		Can walk on water, lava and valleys.	Group A Group F Group H Group I
Critical Dodger		Immunity to critical hits.	Group D Group G Group H
Trap Buster		Sometimes destroys traps by stepping on them.	Group A Group B Group F Group H
Sure-Hit Attacker		Regular attacks do not miss.	Group E Group J
Stair Sensor		Learns the location of stairs when changing floors.	Group A Group D Group F Group G Group J
Extra Striker		Sometimes strikes again following an attack.	Group C Group D Group I
Quick Dodger		Raises likelihood of dodging attacks.	Group D Group H Group I
Fast Friend		Raises chances of recruiting foes.	Group B Group H
Trap Seer		Able to step on traps without setting off.	Group D Group G
Intimidator		Sometimes makes foe cringe when they attack.	Group C Group E Group I Group J
No-Charger		Automatically uses charged attack without delay at the cost of 2PP.	Group C Group F
Map Surveyor		Knows the floor layout.	Group A Group G Group J
Quick Striker		Can do two regular attacks in one turn in a row.	Group D Group G
House Avoider		Will not enter Monster Houses.	Group A Group E Group F Group H Group I Group J
Pierce Hurler		Throwing items penetrate Pokemon and keep flying.	Group A Group C Group F
Natural Gifter		Extends effects of seeds and berries to Pokemon's allies. Only for leader.	Group H
Time Tripper		Raises initial Speed by 1.	Group I
Absolute Mover		Can move through water, lava, and valleys. Walls can be crushed.	Group J

For a list of what Pokémon is in which group, use the drop-down menu below to navigate: